Diagnosis Procedure
- CHECK BCM POWER SUPPLY AND GROUND CIRCUIT
Check BCM power supply and ground circuit.
Is the inspection result normal?
YES
GO TO STEP 2 .
NO
Repair or replace the malfunctioning parts.
- CHECK POWER WINDOW MAIN SWITCH POWER SUPPLY AND GROUND CIRCUIT
Check power window switch power supply and ground circuit.
Refer to DIAGNOSIS PROCEDURE .
Is the inspection result normal?
YES
GO TO STEP 3 .
NO
Repair or replace the malfunctioning parts.
- CHECK POWER WINDOW MAIN SWITCH SERIAL LINK CIRCUIT
Check power window serial link circuit.
Refer to COMPONENT FUNCTION CHECK .
Is the inspection result normal?
YES
GO TO STEP 4 .
NO
Repair or replace the malfunctioning parts.
- CONFIRM THE OPERATION
Confirm the operation again.
Is the result normal?
YES
Check intermittent incident. Refer to INTERMITTENT INCIDENT .
NO
GO TO STEP 1.